Miner&#39;s squib holder and inserter



Aug. 10, 1926. 15 1 3 I. T. JENKINS 1; MINERS SQUIB HOLDER AND INSERTER Filed Dec. 16 1925 Patented Aug. 10, 1926.

UNE'EE FECE.

MINER/S SQ'UIB HOLDER AND INSERTER.

Application filed December 16, 1925. Serial No. 75.748.

This invention relates to the art of blasting and has more particular reference to a squib holder and inserter, whereby blasting squibs may be properly supported for insertion within the mine bore and in order that they may be properly ignited and wherein the bore may be suitably plugged all resulting in the obtainance of the proper blast and the distribution of the force in all directions.

The primary object of the invention is to provide an article of this character that is of relatively simple construction, inexpensive of manufacture, and efficient in use.

lVith the aforementioned and other objects in view, the nature of the invention will be better understood, the same comprises the novel form, combination and arrangement of parts hereinafter more fully described and shown in the accompanying drawings and claimed.

In the drawings wherein like reference characters indicate corresponding parts throughout both of the views Figure 1 is a side elevation of my im- 'proved article, and

. Fig. 2 is a detail longitudinal section thereof.

Now having particular reference to the drawings, my novel squib holder and inserter constitutes the provision of a relatively elongated tapered plug 5 of suitable material throughout the length of which extends a bore 6 for the reception of the usual miners squib that is circular in cross section as is well known. The enlarged end of this plug is externally screw threaded as at 7 for receiving an internally threaded closure cap 8 within which is disposed a conical shaped electric coil 9.

The wall of this cap 8 is provided at preferably opposed points with openings 101O adjacent said coil 9 in order that electric wires leading from the positive and negative pole of a storage battery or other suitable source of electric supply may be connected to the opposite ends of said coil.

In the use of my device, the cap 8 is removed from the plug 5, after which the same is forced into the bore in the mine within which isa charge of powder or other blasting material. The squib is then inserted through the bore 6 of the plug, the end thereof projecting outwardly of the end of the bore for association with the enlarged end of the conical-shaped coil 9.

Prior to the attachment of the cap 8, the wires from the battery, not shown, may be associated with the coil. Obviously, by closing the circuit between the said wires the coil will become heated and consequently firing the squib which in turn will fire the charge within the bore of the mine.

The article thus provided will in use close the bore in the mine, permitting the force of the explosion to be dissipated in all directions for securing a satisfactory blast. With the use of the conical shape of the plug 5, the same will be thrown from the bore of the mine just prior to the explosion therein, throwing the same outwardly to such an extent that the same will not become covered by the debris from the explosion, thus allowing the same to be recovered for subsequent use.

It will at once be apparent that Ihave provided a highly novel, simple and eflicient form of miners squib holder and inserter that is well adapted for all of the purposes intended.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is 1. In a miners squib holder and inserter of the character described, a relatively elongated tapered plug throughout the length of which extends a bore for the reception of the miners squib, a cap adapted for engage ment upon the enlarged end of the plug, and means within the cap whereby the squib within the plug may be fired.

2. In a miners squib holder and inserter of the character described, a relatively elongated tapered plug throughout the length of which extends a bore for the reception of the miners squib, a cap adapted for engagement upon the enlarged end of the plug, means within the cap whereby the squib within the plug may be fired, said means comprising an electric coil for receiving one end of the squib and adapted to be electrically connected with a suitable source of electric supply.

In testimony whereof I atlix my signature.

rsAAo T. JENKINS. 

